Evgenii Legotckoi
Evgenii LegotckoiMay 16, 2023, 3:52 p.m.

DjangoDjango - Lesson 064. How to write a Python Markdown extension

Python, markdown, MarkdownField, Django

On this site and a couple of other projects, I actively use markdown to write text, and then generate html code from it. And in the end, I wrote a couple of extensions that perform some specific functionality, which somewhat …

Evgenii Legotckoi
Evgenii LegotckoiMarch 31, 2023, 6:32 a.m.

DjangoDjango - Lesson 063. Full text site search for multiple models with multilingual support

Django, python, Django 3, modeltranslation, full-text search, Django 4

Finally, I managed to make a fairly fast full-text search across several models, taking into account the optimization of requests on the site, which would suit me and meet my requirements for the quality of the project.

If you now …

Evgenii Legotckoi
Evgenii LegotckoiMarch 20, 2023, 6:17 p.m.

DjangoDjango - Lesson 062. How to write a block-template tabbar tag like the blocktranslate tag

tag, templatetags, Django, Django 3, Django 4, template

In this article, I'll show you exactly how you can write a simple block template tag, like the blocktranslate tag in Django .

These block template tags have an opening tag and a closing tag, and the most common one …

Evgenii Legotckoi
Evgenii LegotckoiMarch 19, 2023, 10:56 a.m.

DjangoDjango - Tutorial 061. Adding a Unique View Count

Django, Counter, Django 3, python, Django 4

At the very beginning of creating articles and questions on the forum, I added a simple counter of views on this content.
This counter was an ordinary field of integer type and each time a page was requested it was …

Evgenii Legotckoi
Evgenii LegotckoiMarch 18, 2023, 4:09 p.m.

DjangoDjango - Lesson 060. Speeding up a website with caching templates

Django 3, model_cached_property, cache, Django 4, invalidate, Django

One of the ways to significantly speed up the speed of a Django site is to cache both individual parts of the site templates and cache the templates after they are compiled by the site. Therefore, we will study both …

ДмитрийDec. 10, 2022, 1:50 p.m.

QtHow to open image with correct orientation with Qt tools

QImageReader, поворот изображения при загрузке, QImageWriter, поворот изображения, метаданные jpg

Some popular image formats (like jpg) may contain metadata. One of them is rotation. If you create the file in a graphics editor, then rotate it in the viewer, and finally load it into your application using the QImage, QPicture, …

Evgenii Legotckoi
Evgenii LegotckoiOct. 16, 2022, 3:58 p.m.

Djangodjango_model_cached_property - Caching property for individual model objects in Django

cache, model_cached_property, invalidate, redis, Python 3, Django

Introducing the release of the stable battery django_model_cached_property for caching property for individual model objects in Django.

I already said that evileg_core contains similar functionality, but now I decided to bring this caching into a separate package. This is due …

ДмитрийSept. 7, 2022, 2:40 p.m.

C++Engineering solution of a cubic equation using Vieta's trigonometric formula

кубическое уравнение, unique_ptr, компьютерная математика, полиномиальное уравнение, тригонометрическая формула Виета

As you know, the solution of the cubic equation has been known since the 16th century. However, even today, engineers can face a problem in solving it. This complexity is due to the need to extract the root from complex …

Evgenii Legotckoi
Evgenii LegotckoiSept. 5, 2022, 3:45 a.m.

DjangoAnalysis of errors in the development and promotion of a site on Django - Custom tag<cut>

development, Django, Custom

And now some thoughts on the topic of custom tags, and whether they should be introduced at all.

The short answer is NO.

Now let's think about this topic - "Why?" . There is such a well-known Russian-language resource Habr, …

Evgenii Legotckoi
Evgenii LegotckoiSept. 2, 2022, 6:06 a.m.

DjangoAnalysis of errors in the development and promotion of a site on Django - Multilingual forms

forms, Мультиязычноть, Django, Translations

With this publication, I would like to start sharing my observations after almost seven years of supporting the EVILEG project. So that every newbie could roughly understand and imagine whether it is worth doing a similar or different functionality or …


Qt - Test 001. Signals and slots

  • Result:57points,
  • Rating points-2

C++ - Test 001. The first program and data types

  • Result:60points,
  • Rating points-1

C++ - Test 005. Structures and Classes

  • Result:0points,
  • Rating points-10
Last comments
JonnyJoJune 8, 2023, 12:14 p.m.
Qt/C++ - Lesson 019. How to paint triangle in Qt5. Positioning shapes in QGraphicsScene Евгений, здравствуйте! Решил поэкспериментировать немного с кодом из этого урока, нарисовать вместо треугольника квадрат и разобраться с координатами. В итоге, запутался. И ни документация,…
JonnyJoMay 25, 2023, 2:24 p.m.
How to make game using Qt - Lesson 2. Animation game hero (2D) Евгений, благодарю!
Evgenii Legotckoi
Evgenii LegotckoiMay 25, 2023, 4:49 a.m.
How to make game using Qt - Lesson 2. Animation game hero (2D) Код на строчка 184-198 вызывает перерисовку области на каждый 4-й такт счётчика. По той логике не нужно перерисовывать объект постоянно, достаточно реже, чем выполняется игровой слот. А слот вып…
JonnyJoMay 21, 2023, 10:49 a.m.
How to make game using Qt - Lesson 2. Animation game hero (2D) Евгений, благодарю! Всё равно не совсем понимаю :( Если муха двигает ножками только при нажатии клавиш перемещение, то что, собственно, делает код со строк 184-198 в triangle.cpp? В этих строчка…
Evgenii Legotckoi
Evgenii LegotckoiMay 21, 2023, 5:57 a.m.
How to make game using Qt - Lesson 2. Animation game hero (2D) Добрый день. slotGameTimer срабатывает по таймеру и при каждой сработке countForSteps увеличивается на 1, это не зависит от нажатия клавиш, нажатая клавиша лишь определяет положение ножек, котор…
Now discuss on the forum
TwangerJune 7, 2023, 11:12 a.m.
Ошибка при выполнении триггерной функции (GreenPlum) Есть 3 таблицы fact_amount со структурой: CREATE TABLE fact_amount ( id serial4 NOT NULL, fdate date NULL, type_activity_id int4 NULL, status_id int4 NULL, CONSTRAINT fact…
Alexander RyabikovJune 6, 2023, 1:35 p.m.
Работа с QFileSystemModel Вопросик по теме QFileSystemModel в Linux. Он, как и положено, обновляется самостоятельно, если директория локальная. Но, вот, сетевая папка (у меня шара samba) не обновляется. Как её можно…
Evgenii Legotckoi
Evgenii LegotckoiApril 16, 2023, 4:07 a.m.
Мобильное приложение на C++Qt и бэкенд к нему на Django Rest Framework Да, это возможно. Но подобные вещи лучше запускать через celery. То есть drf принимает команду, и после этого регистрирует задачу в celery, котроый уже асинхронно всё это выполняет. В противном …
Алексей БобровDec. 14, 2021, 7:03 p.m.
Sorting the added QML elements in the ListModel I am writing an alarm clock in QML, I am required to sort the alarms in ascending order (depending on the date or time (if there are several alarms on the same day). I've done the sorting …

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